How much will I lose by?
08-26-2002, 08:58 PM
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How much will I lose by?
I've got an 87 IROC 305 TPI with 700R4. I went ahead and knocked the cat out of the line, but I'm still running single exhaust. Otherwise, it's stock. For Homecoming, my friend is borrowing a 79 TransAm 400 with a Turbo400 Tranny. It's got dual exhaust and packs. Otherwise, it's stock. How will the race go?
08-26-2002, 09:30 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I didn't think there were 400s in '79?
Either way, I'd say if you got toasted by that 3.1 car, you're dead.
Either way, I'd say if you got toasted by that 3.1 car, you're dead.
08-26-2002, 10:41 PM
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Car: 1981 Oldsmobile Cutlass Supreme Brougham 2dr Coupe
Engine: 403 Olds v8, bored .030 over
Transmission: 350 T.H. 3A, shift kit
The 1979 400 TA probably has 220 hp and somewhere in the neighbourhood of 320-350 lbs/ft of torque. They weigh 3730. A guy in a Pontiac mag ran 15.27 on street tires....but he had 3.23s and a Borg Warner T-10 transmission.
Probably a low 16 second car.
By the way...how do you rid yourself of catalytic converters? It's not a difficult operation, is it? You don't have to cut or replace the rest of your exhaust system, do you?
Probably a low 16 second car.
By the way...how do you rid yourself of catalytic converters? It's not a difficult operation, is it? You don't have to cut or replace the rest of your exhaust system, do you?
08-27-2002, 10:10 PM
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the TA has the 400 never been rebuilt stock engine. With my cat, I cut it out with a torch, took a pipe and knocked out the honeycomb on the inside, and put it back on. Then it still looks like it has a cat, but performs like it doesn't.
08-28-2002, 02:36 PM
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Car: 1991 Formula
Engine: 350 firebreathing inches of Small Block Chevrolet
Transmission: A 700R4 that has trouble handling the formentioned 350.
Not a good way to clear out cat. Because that spot in the cat that's knocked out creates a lul spot in the exhaust and accually isn't much of a performance increase at all. You would be better off just cutting the cat out and putting a staight pipe in where the cat was.
Later, Garrett
Later, Garrett
08-28-2002, 06:13 PM
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Car: 2005 BMW 545i
Engine: 4.4L N62B44
Transmission: 6spd auto
Axle/Gears: Rotating
Originally posted by CamaroFreak406
Not a good way to clear out cat. Because that spot in the cat that's knocked out creates a lul spot in the exhaust and accually isn't much of a performance increase at all. You would be better off just cutting the cat out and putting a staight pipe in where the cat was.
Later, Garrett
Not a good way to clear out cat. Because that spot in the cat that's knocked out creates a lul spot in the exhaust and accually isn't much of a performance increase at all. You would be better off just cutting the cat out and putting a staight pipe in where the cat was.
Later, Garrett
but yeah I agree
straight pipe instead of the cat
or put a pipe through the cat
one of the two
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